SBN71-120 thru SBN85-390, SBD30-150/199 TANK TYPE COMMERCIAL
GAS WATER HEATER SERVICE HANDBOOK
t
n
e
m
tr
a
p
e
D
g
n
i
n
i
a
r
T
l
a
c
i
n
h
c
e
T
3
2
s
r
e
t
a
e
H
r
e
t
a
W
e
t
a
t
S
Ashland City, Tennessee
7
0
0
2
©
DRAFT PROVING PRESSURE SWITCH - SETTINGS
Draft Proving Pressure Switch Table
SBN
Models
SBD
Models
Pressure Setting
To Close Switch
(Inches W.C.)
"
0
1
.
±
0
6
.
1
)
-(
6
6
3
"
0
1
.
±
"
0
0
.
2
)
-(
5
7
2
"
0
1
.
±
"
5
7
,
1
)
-(
0
1
3
"
0
1
.
±
"
0
4
.
2
)
-(
0
0
2
/
0
2
1
"
0
1
.
±
"
0
6
.
2
)
-(
0
8
1
/
4
5
1
30-150/199
NOTE:
Pressure Switch Contacts are Normally Open “
N.O.
” and close on a fall in pressure.
(-) 2.50" ± .10"
